(19)

(11)

EP 2 727 408 A1

(12)

(43) Date of publication: 07.05.2014 Bulletin 2014/19 (21) Application number: 12822096.9 (22) Date of filing: 24.05.2012

(51) International Patent Classification (IPC):  H04W 48/16(2009.01) H04B 7/26(2006.01) H04J 11/00(2006.01) (86) International application number: PCT/US2012/039316 (87) International publication number: WO 2013/022512 (14.02.2013 Gazette 2013/07)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR (30) Priority: 11.08.2011 US 201161522395 P 29.02.2012 US 201213408411 (71) Applicant: BlackBerry Limited Waterloo, ON N2K 0A7 (CA)	(72) Inventors: BLANKENSHIP, Yufei Wu Rolling Meadows, Illinois 60008 (US) SONG, Yi Irving, Texas 75039 (US) HEO, Youn Hyoung Waterloo, Ontario N2L 3W8 (CA) YU, Yi Irving, Texas 75039 (US) BONTU, Chandra Kanata, Ontario K2K 3K1 (CA) CAI, Zhijun Irving, Texas 75039 (US) (74) Representative: Moore, Barry et al Hanna Moore & Curley 13 Lower Lad Lane Dublin 2 Dublin 2 (IE)